Extended X-ray observations of Scorpius X-1 with a Bragg crystal spectrometer.
Abstract
Observations covering multiple orbital periods of the X-ray source Sco X-1 were carried out in 1975 and 1976 with the graphite crystal spectrometer aboard OSO 8. Time-averaged continuum spectra are featureless and are reasonably well described in terms of a Comptonized thermal bremsstrahlung spectrum in which kT is about 1.5-2 keV and in which the number of electron scatterings that each photon is assumed to have undergone is of the order of 100. Line limits, typically with equivalent widths of a few electron volts, are established for important emission lines of Si XIII, Si XIV, S XV, S XVI, and Fe XXV as a function of binary phase.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1978
- DOI:
- 10.1086/156607
- Bibcode:
- 1978ApJ...226..276L
- Keywords:
-
- Astronomical Spectroscopy;
- Bragg Angle;
- Spaceborne Astronomy;
- X Ray Sources;
- X Ray Spectra;
- Bremsstrahlung;
- Data Processing;
- Electron Scattering;
- Emission Spectra;
- Line Spectra;
- Oso-8;
- Plasma Spectra;
- Astronomy;
- Spectra:X-Ray Sources